Reliability and Validity of CHO-CHO-Mobile Scale in Young Medical Adolescent Students in Bhopal - A Pilot Study
Reliability and Validity of CHO-CHO-Mobile Scale
Keywords:
HPA Questionnaire, cronbach's alpha, Content Validity IndexAbstract
Context (Background): Mobile phone, the modern gadget is becoming integral part of daily human activity. This study attempts to develop a questionnaire to assess how mobile phone is being used by medical students in their daily life. Objective: To find out the Validity and reliability of CHO-CHO-Mobile scale in adolescents Indian medicals students in Bhopal. Method: A 30 item questionnaire was developed and its Content Validity Index was calculated by circulating it amongst 10 subject experts. Then cross-sectional study was designed to test a questionnaire (items with CVI-Item >0.8) among young medical students from three different medical colleges. Factor reduction and domain identification was done by using Principal Component Analysis wherein factors with Eigen value > 1 and which explains >5% variance was identified. Reliability analysis was done by using cronbach's alpha and Split Half reliability. All analyses were done by using IBM SPSS 21 version software. Result: Twenty seven questions were shortlisted based on Content Validity Index value for each item (Items with CVI-I>0.8) to be included in CHO-CHO Mobile Scale. This 22 item scale was administered to 286 medical students. We identified 9 factors based on criterion and further each question was selected if factor loading is >0.30. These 9 factors are General Utility, Time spent in different habits, Withdrawal, Control over usage, Time spent for social media, Academic utility, Relation to sleep, Habit, Preference over safety. CHO-CHO scale demonstrated medium reliability (Cronbach alpha = 0.667). Conclusion: A 22 item CHO-CHO Mobile scale has been developed which can be used to assess mobile dependence in medical students. Assessment of mobile dependence can be useful in studying its association with their lifestyle and health risk behaviours. This scale has acceptable value of Cronbach alpha and Split-half for assessing reliability. [Sunil C NJIRM 2017; 8(5):27-32]
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